I've known this girl for years and we used to be good friends. At one point though she started acting cold towards me and we stopped talking completely for months (and I should add that she suddenly started acting cold). But even when we started talking again she was still cold to me (ie giving abrupt answers, ignoring me at times). Anyway recently I questioned her about it, saying that I felt she's been that way for a while (and before she wasn't at all, we were close in fact). She immediately goes on the defensive, saying it's not so, and that I shouldn't accuse her of things. I eventually drop it figuring she must have had a bad day or something. What the hell is up with her behaviour, it makes no sense? Any insight would be appreciated.